J/A+A/575/A18ivo://CDS.VizieR/J/A+A/575/A18doi:10.26093/cds/vizier.35750018CDSBonfanti A.Ortolani S.Piotto G.Nascimbeni V.2017-12-22T05:32:37Z2015-02-12T11:31:54ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frstellar-evolutionary-modelsstellar-evolutionary-trackseffective-temperaturestellar-agesstellar-massesThis article aims to measure the age of stars with planets (SWP) through stellar tracks and isochrones computed with the Padova & Trieste Stellar Evolutionary Code (PARSEC). We developed algorithms based on two different techniques for determining the ages of field stars: isochrone placement and Bayesian estimation. Their application to a synthetic sample of coeval stars shows the intrinsic limits of each method. For instance, the Bayesian computation of the modal age tends to select the extreme age values in the isochrones grid. Therefore, we used the isochrone placement technique to measure the ages of 317 SWP. We found that ~6% of SWP have ages lower than 0.5Gyr. The age distribution peaks in the interval [1.5, 2]Gyr, then it decreases. However, ~7% of the stars are older than 11Gyr. The Sun turns out to be a common star that hosts planets, when considering its evolutionary stage. Our SWP age distribution is less peaked and slightly shifted towards lower ages if compared with ages in the literature and based on the isochrone fit. In particular, there are no ages below 0.5Gyr in the literature.2015A&A...575A..18Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/575/A18CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/575/A18https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/575/A18http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/575/A18https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/575/A18https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/575/A18http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/575/A18GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/575/A18/table4 (SWP parameters determined through Padova isochrones)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/575/A18/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/575/A18/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/575/A18/table4?GETtext/xml+votable180.050000true4.6029208-15.26730560.0055555555555555566/311 341 431 679 737 748 790 876 1544 1597 2110 2152 2335 2374 2416 2497 2532 2551 2711 3344 3536 3876 3979 4136 4285 4429 4528 4990 5067 5309 5522 5556 5572 5667 5815 6006 6017 6349 6381 6539 6638 6760 6791 6821 7136 7208 7746 7760 8357 8478 8602 8785 8825 9173 9350 9355 9403 9459 9483 9524 9662 9811 9843 9893 10079 10278 10730 10953 11352 11589 12024 12056 12146 12306 12424 12482 12502 12612 12644 12853 12862 12983 13143 13439 13643 13680 13688 13702 13808 14275 14416 14466 14516 14548 14682 14825-14826 14896 14914 14918 14939 15129 15143 15550 15950 16035 16627 16652 16667 16707 16823 17172 17587 17641 17731 17954 18028 18172 18441 18614 18821 18835 18953 19619 19669 19815 19904 19912 20072 20116 20145 20557 20582 20746 20886 21003 21223 21254 21326 21406 21838 21906 22001 22034 22036 22040 22078 22168-22169 22505 22590 22654 22837 23013 23322 23646 23681 24019 24178 24831 25114 25132 25446 25885 25939 25950 26062 26183 26242 26575 26706-26707 26771 26790 26901 26938 26978 26997 27018 27060 27164 27220 27616 27682 27750 27881 28085 28130 28274 28400 28571 28763 28767 29513 29541 30015 30170 30241 30278 30293 30378 30419 30436 30450 30526 30541 30707 30770 31374 31494 31606 31641 31813 31860 32501 32509 32561 32564 32727 32749 32848 33182 33243 33258 33377 33430 33456 33510 33630 33717 33813 33923 33974 34446 34773 34905 34951 35210 35392 35415 35442 35907 35954 36092 36142 36506 36697 37018 37461 37573 37954-37955 38162 38414 38461 38545 38728 38807 38998 39280 39364 39646 40101 40400 40442 40692 40862 41058 41167 41432 41446 41607 41724 42044 42221 42248 42281 42318 42333 42386 42510 42934 43012 43228 43374 43775 43813 43818 44243 44398 45364 45717 46111 46215 46297 46421 46437 46800 46843 46967 47476 47550 47590 47930 48105 48108-48109 48519 48530 48545 48652https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/575/A18?format=asciidefaultJ/A+A/575/A18/table4SWP parameters determined through Padova isochronesSimbadNameSimbad column added by the CDSmeta.idcharL[0.1/504] Star LuminositysolLumphys.luminositydoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar Namemeta.id;meta.maincharAge[0.003/12.6] Stellar ageGyrtime.agefloate_Age[0.0005/4.7] rms uncertainty on ageGyrstat.error;time.agefloatTeff[3704/10942] Effective temperatureKphys.temperature.effectiveinte_Teff[2/110] rms uncertainty on TeffKstat.error;phys.temperature.effectiveinte_L[0/21] rms uncertainty on LsolLumstat.errorfloatM[0.4/2.6] Star MasssolMassphys.massfloate_M[0.0002/0.2] rms uncertainty on MsolMassstat.errorfloatlogg[1.1/4.8] Logarithm of surface gravitylog(cm.s**-2)phys.gravityfloate_logg[0.0001/0.1] rms uncertainty on logglog(cm.s**-2)stat.errorfloatRad[0.5/49] RadiussolRadphys.size.radiusfloate_Rad[0.0001/1.8] rms uncertainty on RadsolRadstat.errorfloatfPlx[0,1]? flag on parallax (0=Hipparcos) (1)meta.codeintnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main